Dogs and horses grew up in very different worlds, and their intelligence reflects that. Dogs evolved alongside humans, learning to read gestures, voices, and emotions for survival. This is why a dog ...

Beside our “best friends,” dogs, perhaps only the horse has had such a profound impact on human history. As a herd animal, horses made life for humans in the harsh steppes of interior Eurasia, or the ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...